package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.anno.AutoFill;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.enumeration.OperationType;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }
        //密码比对

        password = DigestUtils.md5DigestAsHex(password.getBytes());

        //密码比对
        // TODO 后期需要进行md5加密，然后再进行比对
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    /**
     * 新增员工
     * @param dto
     */
    @Override
    @AutoFill(OperationType.INSERT)
    public void saveEmp(EmployeeDTO dto) {
        Employee employee = new Employee();
        //将dto的数据复制到employee中
        BeanUtils.copyProperties(dto,employee);
        //默认密码为123456 并且加密
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));
        //设置默认状态为启用
        employee.setStatus(StatusConstant.ENABLE);
        //新增创建时间
        employee.setCreateTime(LocalDateTime.now());
        //新增修改时间
        employee.setUpdateTime(LocalDateTime.now());
        // 添加创建人
        employee.setCreateUser(BaseContext.getCurrentId());
        //添加修改人
        employee.setUpdateUser(BaseContext.getCurrentId());

        employeeMapper.saveEmp(employee);
    }

    /**
     * 分页查询
     * @param dto
     * @return
     */
    @Override
    public PageResult getEmployeePageQuery(EmployeePageQueryDTO dto) {

        //开启分页插件
        PageHelper.startPage(dto.getPage(), dto.getPageSize());
        //查询所有员工数量
        //查询所有员工数据
        Page<Employee> page = employeeMapper.Page(dto);
        long total = page.getTotal();
        List<Employee> employeeList = page.getResult();
        return new PageResult(total,employeeList);


    }

    /**
     * 状态管理
     * @param status
     * @param id
     */
    @Override
    @AutoFill(OperationType.UPDATE)
    public void status(Integer status,int id) {
        Employee employee = new Employee();
        employee.setStatus(status);
        employee.setId((long) id);
        employeeMapper.updataGetById(employee);
    }

    /**
     * 根据id查询员工
     * @param id
     * @return
     */
    @Override
    public Employee getById(Integer id) {
        Employee employee = employeeMapper.getById(id);
        return employee;
    }

    /**
     * 编辑员工
     * @param dto
     * @return
     */
    @Override
    @AutoFill(OperationType.UPDATE)
    public Employee updataById(EmployeeDTO dto) {
        Employee employee = new Employee();
        BeanUtils.copyProperties(dto,employee);
        //补全数据
        employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser(BaseContext.getCurrentId());
        employeeMapper.updataGetById(employee);

        return employee;
    }

}
